Topic
Dysarthria
About: Dysarthria is a research topic. Over the lifetime, 2402 publications have been published within this topic receiving 56554 citations.
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04 May 2020
TL;DR: It is shown that a small set of words spoken by the dysarthric subject is sufficient to assess the speech intelligibility reliably and exhibits a significant correlation with perceptually assessed intelligibility scores.
Abstract: Dysarthria is a motor speech impairment caused by muscle weakness. Individuals, with this condition, are unable to control rapid movement of the velum leading to reduction in intelligibility, audibility, naturalness and efficiency of vocal communication. Systems that can assess intelligibility of dysarthric speech can help clinicians diagnose the impact of therapy and medication. In the paper, we propose a usable novel method to assess intelligibility of dysarthric speakers. The approach is based on the observation that the performance of a speech recognition engine deteriorates with increase in severity of the disorder. The mismatch between the original word and the recognized string is exploited to compute the dysarthria intelligibility score. Experiments on UA speech corpus show that the computed intelligibility score exhibits a significant correlation with perceptually assessed intelligibility scores. We further show that a small set of words spoken by the dysarthric subject is sufficient to assess the speech intelligibility reliably.
16 citations
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TL;DR: This paper presents a brief outline of the most significant associations to facilitate prompt differential diagnosis and thereby reduce the number of instrumental examinations required for diagnostic testing.
16 citations
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TL;DR: It is indicated that dissociation of oral and laryngeal gestures due to brain injury is possible and the possibility of discrete center lesions in the frontal motor association area causing different types of apraxia of speech is discussed.
16 citations
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01 May 2016TL;DR: A new Dutch dysarthric speech database containing utterances of neurological patients with Parkinson’s disease, traumatic brain injury and cerebrovascular accident is presented.
Abstract: We present a new Dutch dysarthric speech database containing utterances of neurological patients with Parkinson’s disease, traumatic brain injury and cerebrovascular accident. The speech content is phonetically and linguistically diversified by using numerous structured sentence and word lists. Containing more than 6 hours of mildly to moderately dysarthric speech, this database can be used for research on dysarthria and for developing and testing speech-to-text systems designed for medical applications. Current activities aimed at extending this database are also discussed.
16 citations
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TL;DR: It is suggested that listener adaptation to degraded speech may be negligible for talkers with dysarthria whose speech is marked by reduced signal predictability.
Abstract: Purpose Listener-targeted perceptual training paradigms, which leverage the mechanism of perceptual learning, show strong promise for improving intelligibility in dysarthria, offsetting the communicative burden from the speaker onto the listener. Theoretical models of perceptual learning underscore the importance of acoustic regularity (i.e., signal predictability) for listener adaptation to degraded speech. The purpose of the current investigation was to evaluate intelligibility outcomes following perceptual training with hyperkinetic dysarthria, a subtype characterized by reduced signal predictability. Method Forty listeners completed the standard 3-phase perceptual training protocol (pretest, training, and posttest) with 1 of 2 talkers with hyperkinetic dysarthria. Perceptual data were compared to a historical data set for 1 other talker with hyperkinetic dysarthria to examine the effect of perceptual training on intelligibility. Results When controlling for pretest intelligibility, regression results suggest listeners of the 2 novel talkers with hyperkinetic dysarthria performed comparably to the listeners of the original talker on the posttest following training. Furthermore, differences between pretest and posttest intelligibility failed to reach clinical significance for all 3 talkers and statistical significance for 2 of the 3. Conclusion The current findings are consistent with theoretical models of perceptual learning and suggest that listener adaptation to degraded speech may be negligible for talkers with dysarthria whose speech is marked by reduced signal predictability.
16 citations